TNGRF (Thungela Resources) Effective Interest Rate on Debt %: 1,541.21% (As of Dec. 2025)

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TNGRF Thungela Resources Ltd TNGRF
76 GF Score
Price $5.87
GF Value $7.03
Valuation Modestly Undervalued
! 7 Warning Signs
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What is Thungela Resources Effective Interest Rate on Debt %?

Thungela Resources TNGRF -5.93% 76 Effective Interest Rate on Debt % is 1,541.21% as of Dec. 2025. GuruFocus rates TNGRF with a GF Score™ of 76/100 and a GF Value™ of $7.03 (Modestly Undervalued). The stock has 7 warning signs investors should review.

Effective Interest Rate on Debt % is the usage rate that a borrower actually pays on a debt. It is calculated as the positive value of Interest Expense divided by its average total debt. Total debt equals to Long-Term Debt & Capital Lease Obligation plus Short-Term Debt & Capital Lease Obligation. Thungela Resources's annualized positive value of Interest Expense for the quarter that ended in Dec. 2025 was $55 Mil. Thungela Resources's average total debt for the quarter that ended in Dec. 2025 was $4 Mil. Therefore, Thungela Resources's annualized Effective Interest Rate on Debt % for the quarter that ended in Dec. 2025 was 1,541.21%.


Thungela Resources  (OTCPK:TNGRF) Effective Interest Rate on Debt % Explanation

Effective Interest Rate on Debt % measures the usage rate that a borrower actually pays on a debt.


Thungela Resources Effective Interest Rate on Debt % Related Terms


Thungela Resources Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for Thungela Resources's Effective Interest Rate on Debt % can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Thungela Resources Effective Interest Rate on Debt % Chart

Thungela Resources Annual Data
Trend Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Effective Interest Rate on Debt %
Get a 7-Day Free Trial 140.68 418.05 689.63 1,292.26 1,645.94

Thungela Resources Semi-Annual Data
Dec18 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Effective Interest Rate on Debt % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 882.13 793.49 1,537.98 2,896.08 1,541.21

TNGRF vs CNR: Effective Interest Rate on Debt % Comparison

For the Thermal Coal subindustry, Thungela Resources's Effective Interest Rate on Debt %, along with its competitors' market caps and Effective Interest Rate on Debt % data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Thungela Resources Effective Interest Rate on Debt % vs Other Energy Sources Industry

For the Other Energy Sources industry and Energy sector, Thungela Resources's Effective Interest Rate on Debt % distribution charts can be found below:

* The bar in red indicates where Thungela Resources's Effective Interest Rate on Debt % falls into.


TNGRF
76GF Score
Thungela Resources Ltd TNGRF
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
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Thungela Resources Effective Interest Rate on Debt % Calculation

Thungela Resources's annualized Effective Interest Rate on Debt % for the fiscal year that ended in Dec. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (A: Dec. 2024 )+Total Debt  (A: Dec. 2025 ))/ count )
=-1  *  -64.636/( (2.745+5.109)/ 2 )
=-1  *  -64.636/3.927
=1,645.94 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=1.043 + 1.702
=2.745

Total Debt  (A: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=2.911 + 2.198
=5.109

Thungela Resources's annualized Effective Interest Rate on Debt % for the quarter that ended in Dec. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (Q: Jun. 2025 )+Total Debt  (Q: Dec. 2025 ))/ count )
=-1  *  -55.368/( (2.076+5.109)/ 2 )
=-1  *  -55.368/3.5925
=1,541.21 %

where

Total Debt  (Q: Jun. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=0.617 + 1.459
=2.076

Total Debt  (Q: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=2.911 + 2.198
=5.109

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

In the calculation of annual Effective Interest Rate on Debt %, the Interest Expense of the last fiscal year and the average total debt over the fiscal year are used. In calculating the quarterly data, the Interest Expense data used here is two times the semi-annual (Dec. 2025) interest expense data. Effective Interest Rate on Debt % is displayed in the 30-year financial page.

What does a Effective Interest Rate on Debt % of 1,541.21% mean?
Thungela Resources (TNGRF) has a Effective Interest Rate on Debt % of 1,541.21% as of Dec. 2025. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Thungela Resources and its competitors.
Is Thungela Resources' Effective Interest Rate on Debt % too high?
Thungela Resources' current Effective Interest Rate on Debt % is 1,541.21%. Overall, Thungela Resources has a GF Score™ of 76/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Thungela Resources' Effective Interest Rate on Debt % compare to CNR?
Thungela Resources' Effective Interest Rate on Debt % of 1,541.21% can be compared against companies in the Other Energy Sources industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Effective Interest Rate on Debt % for an Other Energy Sources company?
A good Effective Interest Rate on Debt % depends on the Other Energy Sources industry context. However, Effective Interest Rate on Debt % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Effective Interest Rate on Debt % mean?
A high Effective Interest Rate on Debt % can signal that a stock is expensive relative to its fundamentals. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Thungela Resources and its competitors. Thungela Resources's current Effective Interest Rate on Debt % is 1,541.21%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Thungela Resources stock overvalued right now?
Based on GuruFocus' analysis, Thungela Resources (TNGRF) is currently considered Modestly Undervalued. The stock's GF Value™ is $7.03, compared to a current price of $5.87 — trading 16.5% below its estimated fair value. The current Effective Interest Rate on Debt % is 1,541.21%. Thungela Resources' overall GF Score™ is 76/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Effective Interest Rate on Debt % calculated?
Effective Interest Rate on Debt % is calculated from a company's financial statements. For Thungela Resources (TNGRF), the current Effective Interest Rate on Debt % is 1,541.21% as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Thungela Resources (TNGRF) Overvalued in 2026?

Based on GuruFocus' analysis, Thungela Resources stock appears to be undervalued. The current stock price of $5.87 is trading 16.5% below its estimated GF Value™ of $7.03. GuruFocus considers Thungela Resources to be Modestly Undervalued.

Key valuation signals for TNGRF:

  • Effective Interest Rate on Debt %: 1,541.21%
  • GF Value™: $7.03 vs. price of $5.87 (16.5% below fair value)
  • GF Score™: 76/100 with 7 warning signs

No single metric tells the full story. See the TNGRF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Thungela Resources Business Description

Address 25 Bath Avenue, Rosebank, Johannesburg, GT, ZAF, 2196
Thungela Resources Ltd is a pure-play producer and exporter of thermal coal with operations in South Africa and Australia. The group focuses on high-quality coal reserves and marketable production, positioning as a key player in the energy market by delivering coal through world-class ports, and powering nations. It owns interests in various mining operations, namely Goedehoop, Greenside, Isibonelo, Khwezela, AAIC, Mafube Coal Mining, and Butsanani Energy which consist of both underground and open cast mines located in the Mpumalanga province of South Africa. Its operational segments are Opencast, Underground, and Services.
76GF Score

Get the complete analysis for TNGRF

Effective Interest Rate on Debt % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$5.87
Price
$7.03
GF Value